. Clinical trial of omega-3 supplementation. Boy holding a dietary supplement of omega-3 fatty acids during a trial to investigate whether the supplement can have certain health benefits. Omega-3 fatty acids are essential for normal brain function and are derived solely from the diet, but occur at lower than optimum levels in modern diets in developed countries. Taken twice daily for 8 weeks the aim is to see whether the supplement improves the mental functioning and fatigue levels of children aged 10 to 12. This can be measured through tests designed to assess memory, attention and reaction times. Photographed at the School of Psychology, Northumbria University, UK. MODEL RELEASED

Photo website with Rights Managed and Royalty Free stock photos, images, illustrations and footage available for download immediately for commercial and editorial uses. Aflo is a leading independent supplier and producer of stock pictures and visual content. Search and find high quality images and video for design, print, web-use and publishing. Buy photos from our extensive collection of model released and property released sports images. Search some of the most beautiful travel and landscape pictures from our own photographers and license from our large collection of content, modern and archive, focusing on Japan. We provide free research. Register for personal account management and for full use of our Stock Photography website and start to download images now.